Sectional mold for making concrete rlocks



Oct.

1927' c. E. SANSON SEGTIONAL MOLD FOR MAKING CONCRETE BLOCKS Filed Feb. 10. 1926 Z. w w L 56 E f 0 E LOP 2 2 M M U 7 m D... aw I l I 0 8 2 m (l 5 a 17/01! a g :w wo J I 2 9/0\ a I Itn IA 1 x 2 k n? .1 g 7 Jim 1 wk m m #3 e E1 i v 7 y 6 7 )tnwsss Oct. 18,1927. ,776

C. E. SANSON SECTIONAL MOLD FOR MAKING CONCRETE BLOCKS Filed Feb. 10. 1926 I5 Sheets-Sheet 2 W 7 7 0 IVE Y5 Oct. 18, 1927;

1,645,776 c. E. SANSON SEICTIONAL MOLD FOR MAKING CONCRETE BLOCKS Filed Feb. 10. 1926 3 Sheets-Sheet 3 I VENTOR 6f 6, MW #0 rxvzss By %:Xmrys Patented Oct. 18, 1927.

UNITED STATES CHARLES E. SANSON, OF EAST. SYRACUS E, NEW YORK.

SEQIIONAL MOLD FOR MAKING CONCRETE BLOCKS Application filed February This invention relates to a device for molding concrete blocks, and refers more particularly to a collapsible mold for making hollow cement blocks of uniform size for use in structural concrete building but may be used for making blocks of unequal lengths as, for example, half or three-quarter the standard length for corner finishing.

one of the objects is to make theupright portions of the mold into two sections hinged together at one corner with detachable interlocking connections at the diagonally opposite. corner for holding the sections in fixed relation and permitting them to be eam'ly and quickly opened to free them from the molded block when the latter is sufiiciently set to retain its shape, the remaining diagonally opposite. Corner being rigidly held against flexing movement.

Another object is to provide the base section with suitable cores for producing connected openings in each block in such manner that when these blocks are assembled in a wall the openings will communicate with each other for the circulation of air therethrough the length of the wall for. ventilating purposes and thereby to reduce the liability of transmission oi moisture through the walls.

Another object is to provide the sections of the mold with means to produce beveled corners upon the exposed faces of the blocks and thereby to assure the depression of the joints. withln said surfaces.

' A further object is to enable certain parts of the base section to be easily and quickly changed from one position to another to tormthe conne ing pa ages et-W th openings in the blocks, either for straight longi udinal rk or for c r er t rn Ano h o j c is to pr vide e mold Wi h inte ior er i al ribs to orm cor espon ing vertical grooves or channels in the ends or s des of. th bl ck to be us as ir passage or for the reception of cement at the joints for additionally holding the blocks in proper aliiliement when the joint cement is set.

O her o jects and uses r lating to pecific arts of the mold will be brought out in the ,ollowing description.

In the drawings:

Figure 1 is a top plan of a mold embodying the various features of my inven 10, 1926, Serial No. 87,355.

tion readyfor the reception of the. concrete or cement which is to form a block of standard size. 2

Figures 2 and 3 are sectional viewstaken respectively on lines 2-2 and 3-3, Figure 1. e

Figure 4 is a perspective view of the detached top orv cap of the mold. I i

Figure 5 is a perspective view of the upright sections of the mold unfolded.

Figure 6 is a perspective view of the detached bottom section of the mold.

Figure 7 is a perspective View of an insert section used as apartition when making half block sections.

Figure 8 is a perspective view of one of the supplemental insert sections ada ted to be used at the end or side of the mol when forming straight or corner blocks.

Figures 9 and 10 are perspective views of a block of standard size made in my improved mold as seen from the top and from the bottom respectively.

Figure 11 is a perspective view from the underside of a slightly modified form of block made in the mold to be used for corner work.

Figure 12- is a perspective view from the underside of a half block made in the same mold.

As illustrated, this mold comprises a bottom section -1,, opposite side and end sections -2 and 3-', a top section 4-, a partition section -5". and a supplemental insert section 6, all of which, parts" may be made of wood or metal or part wood and part metal andare constructed so as to form substantially rectangular blocks as shown in Figures 9 to 12 inclusive. i

The b se se tion s r a g in top p n a d o ome ha g eate area than the mold t be; fo me and is pr o g its side andend edges with relatively short upstanding lugs -7 in spaced relation for centering, guiding and holding the side and end sections in operative position thereon when the parts of the mold are assembled use.

This base section -.1. is. also provided with a. pair of core posts 8 extending'upwardly from its upper surface a distance corresponding approximately to the vertical depth of the block to be molded, said posts being arranged in @aced relation along the longitudinalcenter of said base plate and, therefore, substantially midway between the opposite sides thereof and equal distances from the ends, the distance between the posts from center to center being approximately equal to the transverse distance between the innerrfaces of the side walls 2 of the mold when the latter are placed in operative position upon the base so as to form corresponding central vertical openings -8"- in both halves of the block as shown in Figures 9, 10 and 11 or either one of said posts may be used to form a single central vertical opening '8' in the half block as shown in Figure 12. a

A relatively shallow V-shaped rib --9- is mounted upon the upper face of the base plate -1 alongthe longitudinal center thereof and between the lower ends of the posts .8- to form central lengthwise channels- 9' in the adjacent face of the block connecting the 1 vertical openings -8 for the circulation of air thru said channels and openings when the blocks are assembled in wall construction. j A pair of similar V-shaped ribs 10- are also mounted. upon the upper face of the base plate -1 along the longitudinal center thereof as shown in Figures 1, 2 and 6 between the outer faces of the posts and inner faces of the end walls 3- when the latter are placed in operative position on the base plate to formadditional similar grooves or channels ,-1 O' in the lower face of theblock shown in Figures 9 and 10.

The posts -8- and rib 9-- may be permanently secured to the base plate '1- or may be detachably fastened by screws, dowels or any other well-known fastening means if desired.

The rib sections 10-, however, are made detachable from the base plate'but are normally held in operative position thereon by screws -11-, Figure 2.

The object of this removability of the rib sections 10. is to permit them tov be placed in different positions as, for eXample, at one side of either of the posts -8- as shown by dotted lines in Figure 1 for the purpose of forming corresponding channels as --1O leading from the corresponding side ofthe adjacent post opening ,78- toform the block shown in Figure 11 which is adapted to be used at the corner of the wall thereby forming continuay tions of the channels in the lower sides of the block around said corners. For this latter purpose the base plate .--1 is provided with separate pairs of bolt or screw holes -11-- at opposite sides of each post 8- to enable the ribs-+10- to be placed in corresponding positions.

The base plate -1- and top plate 4-.

are provided with relatively shallow length wise ribs -12- projecting inwardly from corresponding side wall 2- when the parts of the mold are assembled for use,

the inner faces of said ribs being beveled I to form lengthwise beveled edges 12' on the lowerand upper outer corner of the block as shown'in Figures 9 to 12 inclusive.

The partition -'-5- and end plates -6 are also provided with similar vertical ribs -13 secured to {the inner faces of the con respondingcupright edges to lie in the same vertical plane as the ribs,-j-12- when the sections --5 and. 6- are placed in op erative position to form beveled corners -13,- at the ends of the outer exposed face of the block as shown in Figures 9 to 12 inclusive. f

Two of the diagonally opposite 'corners of the upright walls '2 and 3---' of the mold are rigidlyconnected to each other by angle plates --14 screwed or otherwise secured to the upper edges ofadjacent per-- tions thereof therebyforming two similar angular or L-shaped sectionsof the mold which when brought together form a rectangular frame adapted to restlupon the base section 1 just inside of and against the lugs 7- which aid in centering the frame ind holding it in operative position upon the ase. V v

One of the side sections'and one of, the end sections at one of the remaining corners of the frame are flexibly connected by a hinge -15- whereby the two angular sections are hinged to each other to be opened and closed at will. 1 j

The meeting edges of theremaining side and end walls are adapted to open and close about the axis of the hinge 15--but when the various parts of the mold are adjusted for use these portions of the frame are locked in their closed position by.]ocking levers -16 and keepers- 17, thelevers -1(')- being hingedly connected to the free end of the corresponding side section 2 while the keepers -1 7-- are secured to the free edge of the adjacent end section -3- and are slotted to receive the levers -'16 which are provided with cams whereby they maybe tightened upon their respective keepers to lock the two angular sections of the frame to each other] as shown in Figurel.

One of the side sections opposite that which is engaged by the lengthwise ribs --12- is provided with relatively thin sheet metal lining sections -18- of sub stantially the same length as the interior Widthof the mold and, therefore, substan,-'

' with interior removable metal linings 18' extending from side to side of the interior of the mold and, therefore, of about the same width asthe length of the sections -'-18- so that they may be interchanged therewith. 7

These plates 6 are provided on their inner faces with vertical ribs -20 extend ing from bottom to top thereof in equally spaced relation from opposite sides of the rib 10- to form vertical channels -20'- in the ends of the block as shown in Figures 9 to 12 inclusive or in one side of the block as shown in Figure 11.

The side walls -2 and lining members 18 and -18 may be provided with holes 19- for receiving bolts or screws for securing said linings to the sides but when the plates -18- are used as linings for the end walls they maybe held in place by the rib members 10-.

\Vhen casting the blocks shown in Figures 9 and 10, the various parts of the mold are assembled as shown by full lines in Figures 1, 2 and 3 with the base 1 at the bottom so that when the cap section 1 is removed the plastic cement or concrete may be poured and tamped into the mold until the latter is filled to the level of the top, sides 2, and -3 and posts 8 and when properly leveled off at the top the top section 4 may be placed in operative position under pressure to form the desired smooth surface including the Develed corners formed by the rib -12.

\Vhen the block is properly formed the entire mold may be inverted with the block resting upon the section 4- and as soon as the concrete has set sufliciently to be self-sustaining the base section 1 may be withdrawn and the angular side sections unlocked one from the other to permit them to be swung from the position shown in Figure 5 thus freeing the entire mold except the section -4 from the block which may remain on said section L until properly seasoned or if necessary it may be removed from the section 4 and placed upon other supports from seasoning.

\Vhen it is desired to form the corner block shown in Figure 11 one of the side plates -18 and one of the end plates 6 at the same end of the mold may be removed and interchanged, and the rib section 10- at the same and may also be removed and placed at one side of the corresponding post -8- as shown by lines in Figure 1.

Either of the plates 6 and ribs -10 may be thus interchanged to form corner blocks for right hand or' left hand turns and for turns in reverse directions.

In forming the half block shown in Figure 12 the partition 5- which might be one of the end plates 6 is inserted in an dotted upright position transversely of and between the side walls of the mold substantially midway between the end walls as shown by dotted lines in Figure 1 and,

therefore, approximately. midway between the posts '8 with its vertical ribs facing the similar vertical ribs on one of the end plates -6 so that the intervening space may be filled with concrete to form the half mold shown in Figure 12 but approximately the same process as used in forming the full size block shown in Figures 9, 10 and 11.

It is apparent from the foregoing description that after the block has been formed in the mold and the latter with the block therein inverted, the removal of the base section -1 similarly displaces its lugs -'i and permits the angular sides of the mold to be readily opened about the axis of the connecting hinges by simply unlocking the'levers 16.

It is obvious that the apparatus described is capable of being used in producing not only the various forms of blocks shown in Figures 9 to 12 inclusive but by removing the beveling ribs 12 and -13 the corner of the blocks may be left perfectly plain instead of beveled, said beveling ribs being usually fastened to their respective parts by dowels or equivalent holding means which will permit them to be removed and replaced at will.

The same is also true of the ribs 20 of the lining plates 6- and partition 5. The channels 20-- formed by the ribs 20= may serve to receive cement in the joints between the adjacent ends of the blocks for holding the blocks against relative transverse movement when built in the wall or if necessary these channels may be left open to form vertical air spaces which will communicate with each other through the several tiers of blocks in the wall and thereby assist the vertical openings 8' in maintaining a free circulation of air through the completed wall for maintaining the latter in a substantially dry condition under all weather conditions.

\Vhat I claim is: r

1. A sectional mold for making concrete blocks comprising a base section and a hollow upright section rising from the base section, said base section being provided with an upright core post in spaced relation to the walls of the upright section to form an opening through the concrete block, and a rib on the inner face of the base section extending from the base of the post to one side of the upright section to form a channel in said block leading from said opening to the exterior of the block, said rib being removable and interchangeable to different sides of the post to vary the position of the channel in the block.

2. In a mold for making concrete blocks, movable to different positions relatively to av rectangular base section, arectangular said posts, said ribs extending from the hollow upright section removably mounted posts to the side walls of the hollow section. 10 upon the base section, core posts mounted In Witness whereof I have hereunto set 5 on the base section in spaced relation to each my hand this 3d day of February, 1926.

other and to the Walls of the hollow section and ribs supported on the base sectiontand CHARLES S ANSON. V V 

